Thalia is the daughter of Zeus and a strong-willed teenager, initially blamed Percy for Annabeth’s capture. She grapples with her loyalties but proves her allegiance to Olympus.

Zoë is the lieutenant of the Hunters of Artemis and initially distrustful of men but joins Percy’s quest. She plays a crucial role in aiding them and facing her own past.

Grover is a satyr tasked with bringing new half-bloods to Camp Half-Blood and seeking the lost god Pan. He supports Percy throughout the journey with his unique satyr skills.

Annabeth is a daughter of Athena and Percy’s close friend and potential love interest. She is captured at the beginning of the quest, motivating part of the mission.

Bianca is Nico’s older sister and a new recruit to the Hunters of Artemis. Her decision to join them affects her relationship with her brother.

Nico is Bianca’s younger brother, who shares a strong bond with her and is new to the world of half-bloods. He admires Percy and faces personal challenges as the story unfolds.